CN103322962B - For measuring gauge and the method for large scale steel wire bearing track diameter - Google Patents
For measuring gauge and the method for large scale steel wire bearing track diameter Download PDFInfo
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- CN103322962B CN103322962B CN201310266391.7A CN201310266391A CN103322962B CN 103322962 B CN103322962 B CN 103322962B CN 201310266391 A CN201310266391 A CN 201310266391A CN 103322962 B CN103322962 B CN 103322962B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 49
- 239000010959 steel Substances 0.000 title claims abstract description 49
- 238000005259 measurement Methods 0.000 claims abstract description 44
- 230000037250 Clearance Effects 0.000 claims abstract description 15
- 230000035512 clearance Effects 0.000 claims abstract description 15
- 210000004279 Orbit Anatomy 0.000 claims abstract description 13
- 230000002950 deficient Effects 0.000 claims description 13
- 230000000875 corresponding Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004301 light adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
For measuring the gauge of large scale steel wire bearing track bore dia, comprise main body (1), sleeve pipe (3), gauge head (4) and make the elastic component (6) of bulk motion, is characterized in that: main body is by measuring big column (G) and being connected to the measurement column (E) of this its left and right side and connecting portion (1-1) forms; This measurement big column left side is the first predetermined value measuring surface (C), and this connecting portion outer end is main body measuring surface (Y); Sleeve pipe is provided with the axial hole (M) of the measurement column (E) of the main body that is slidably connected of one end open, and its axial hole openend is the second predetermined value measuring surface (B), the other end with have that the gauge head of gauge head measuring surface (X) (4) is removable to be connected; The clearance distance (A) of first, second predetermined value measuring surface is greater than the aperture at measured part two ends and the diameter difference 5 ~ 10mm of orbit hole; Elastic component is loaded on bottom axial hole and between measurement column; Also has the limiting mechanism of a restriction measurement column sliding scale; Thus accurately high.
Description
Technical field
The present invention relates to machining measurer, be specifically related to gauge and the method for measuring large scale steel wire bearing track diameter.
Background technology
The hub system that steel ball slides on steel wire is have employed in the stable rotary part of some special machines, its core part is hub track part, its diameter tolerance is very high, be generally H7, what have is higher for H6, and its aperture is generally all greater than 500mm, the feeler gauge therefore using fixed measurement aperture is in the past infeasible.After this type of part machines, although can measure on three coordinate measuring machine, measure efficiency too low, simultaneously easy scrapped parts.At present, such part is not also had to suitable measurement instrument to measure, also without rational structure in the technical field measuring large scale steel wire bearing track bore dia, therefore, the design of this kind of measurement large scale steel wire bearing track bore dia gauge is extremely important.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of accurate height, the measured gauge for measuring large scale steel wire bearing track bore dia of matter.
For solving the problems of the technologies described above, the present invention is for measuring the gauge of large scale steel wire bearing track bore dia, comprise main body, sleeve pipe, gauge head and the elastic component making described bulk motion, is characterized in that: described main body is made up of the connecting portion on the measurement column measuring big column and be connected on the left of this measurement big column and right side; The left side of this measurement big column is the first predetermined value measuring surface, and this connecting portion outer end is main body measuring surface;
Described sleeve pipe is provided with the axial hole of one end open, and this axial hole is slidably connected the measurement column of main body; The axial hole openend of sleeve pipe is the second predetermined value measuring surface;
The described sleeve pipe other end is connected with gauge head is removable, and this gauge head has gauge head measuring surface;
The clearance distance of described first predetermined value measuring surface and the second predetermined value measuring surface is predetermined value, and this clearance distance is greater than the diameter difference 5 ~ 10mm of the aperture at measured part two ends and the diameter of hub orbit hole;
Described elastic component is installed on bottom described axial hole and between measurement column;
Also comprise the limiting mechanism of a described measurement column of restriction sliding scale in the axial hole of sleeve pipe;
Preferably, described limiting mechanism comprises the locating part being located at described sleeve pipe, is located at the stopper slot of relevant position on measurement column; Described locating part extends internally in the stopper slot of measurement column, and the length of this stopper slot and the diameter difference of the aperture at measured part two ends and the diameter of hub orbit hole are to adaptation;
Preferably, described locating part is pin or screw, and described sleeve pipe relevant position is provided with pin-and-hole or the screw of fixing pin or screw; Described stopper slot is strong groove or two ends is the bar-shaped trough of circular arc;
Preferably, described gauge head measuring surface has axial width, and described main body measuring surface has axial width; Gauge head axial width and body shaft are 0.5 ~ 1.5mm to width range, and symmetrical with the common axis after assembling.
Preferably, described gauge head axial width and main body axial width are 1mm;
Preferably, there is connecting hole one end of described sleeve pipe, and gauge head respective end is provided with connecting portion, and sleeve pipe and gauge head are by connecting hole and connecting portion is removable is connected;
Preferably, described connecting hole and connecting portion are respectively screw and corresponding bolt or are respectively pin-and-hole and corresponding pin;
Preferably, described elastic component is spring or elastic rubber;
Preferably, also have with the use of plug, these feeler gauge two ends are respectively qualified measuring junction and defective measuring junction; During use, qualified measuring junction and defective measuring junction are placed between the first predetermined value measuring surface and the second predetermined value measuring surface respectively, and the tolerance of the longitudinal size of qualified measuring junction and the longitudinal size of defective measuring junction and large scale steel wire bearing track bore dia is suitable.
Compared with prior art, gauge for measuring large scale steel wire bearing track bore dia of the present invention and measuring method, its advantage is:
1. the elastic component making bulk motion is set in gauge, makes gauge can put into product parts easily.
2. increase feeler gauge, accurately can judge that whether the diameter of product parts is qualified quickly.
3. the gauge described in coordinates the gauge block of GB/T6093-2001 to use, and can measure the actual diameter size in large scale steel wire bearing track hole.
4. the gauge described in can use on lathe, directly feed can process qualified part, ensure that product parts qualification rate reaches 100% according to the actual diameter measured.
5., because product parts measurement size to be converted to the measurement size of feeler gauge by this gauge, gauge manufacture is relatively easy.
Another technical matters that the present invention will solve be to provide a kind of accurately, the measuring method of large scale steel wire bearing track bore dia that efficiency is high.
For solving the problems of the technologies described above, the measuring method of large scale steel wire bearing track bore dia of the present invention, is characterized in that: comprise the steps:
1) distance is debugged; Both hands hold sleeve pipe and main body respectively, inside compression elastic piece, make the distance between main body measuring surface and measuring surface be less than the internal diameter of measured part;
2) first allocation; Gauge is put into the position of tested part internal diameter;
3) keep in touch; Both hands unclamp the sleeve pipe and main body held, and main body is outwards moved under the effect of elastic component (6), drive gauge head measuring surface to contact with the large scale steel wire bearing track hole surface of part with main body measuring surface;
4) qualified judgement; Make gauge can be positioned at the diametrical position in large scale steel wire bearing track hole with hand mobile gauge among a small circle, when lathe is measured, coordinate the gauge block measurement of GB/T6093-2001, physical size time equal with the minimum dimension of tested product parts internal diameter with the distance of described gauge between guarantee main body measuring surface and measuring surface according to the size of gauge block, calculate the physical size in part large scale steel wire bearing track hole, judge that whether tested product parts internal diameter is qualified;
5) feeler gauge is selected; If the actual diameter calculated is less than the setting of part, just according to the direct feed of actual measured value, can guarantee that product parts energy 100% is qualified.If do not need the physical size of tested large scale steel wire bearing track hole internal diameter, just the clearance distance A of described gauge can be measured, if the longitudinal size A of the qualified measuring junction of feeler gauge by direct feeler gauge
face can be filled between the first predetermined value measuring surface and the second predetermined value measuring surface, and the longitudinal size face of defective measuring junction can not be filled in and then judge that accessory size is qualified.
Compared with prior art, the measuring method of large scale steel wire bearing track bore dia of the present invention not be used on three coordinates carries out parts measurement, directly can measure on lathe, thus easy and measure accurately, efficiency is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of measured part.
Fig. 2 is the main diagram for measuring large scale steel wire bearing track bore dia gauge of the present invention.
Fig. 3 is the diagram of bowing for measuring large scale steel wire bearing track bore dia gauge of the present invention.
Fig. 4 be of the present invention with the use of feeler gauge structural representation.
Fig. 5 is the schematic diagram for measuring during large scale steel wire bearing track bore dia gauge measurement design of part of the present invention.
In figure, product parts 8, the diameter D in large scale steel wire bearing track hole, the outer diameter D in large scale steel wire bearing track hole
, main body 1, feeler gauge 2, sleeve pipe 3, gauge head 4, pin 5, stage clip 6, screw 7, sliding cylinder E, the first predetermined value measuring surface C, keyway F, collar aperture M, the second predetermined value measuring surface B, the clearance distance A between BC two sides, the distance D between two measuring surface
, gauge head measuring surface X, main body measuring surface Y, measure big column G, the axial width H of gauge head measuring surface, the axial width H of main body measuring surface
, the T of feeler gauge holds longitudinal size A
, the Z of feeler gauge holds longitudinal size A
.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Shown in Figure 1, measured part 8, because the diameter D of large scale steel wire bearing track hole 8-1 is greater than 500mm, its two ends, hole also have a hole 8-2 being less than D, and therefore general feeler gauge cannot put into large scale steel wire bearing track hole, or cannot take out gauge from hole again after putting into measurement, after although part 8 machines, can be placed on three-dimensional airborne measurements, but its measurement efficiency is too low, can not measure on lathe simultaneously.
Shown in Fig. 2 and Fig. 3, gauge for measuring large scale steel wire bearing track bore dia of the present invention, comprise main body 1, sleeve pipe 3, gauge head 4 and the elastic component 6 that described main body 1 is moved, is characterized in that: described main body 1 is made up of the connecting portion 1-1 measuring big column G and the measurement column E be connected on the left of this measurement big column G and right side; The left side of this measurement big column G is the first predetermined value measuring surface C, and this connecting portion 1-1 outer end is main body measuring surface Y; Described sleeve pipe 3 is provided with the axial hole M of one end open, and this axial hole M is slidably connected the measurement column E of main body 1; The axial hole M openend of sleeve pipe 3 is the second predetermined value measuring surface B; Described sleeve pipe 3 and gauge head 4 is by connecting hole 3-1 and connecting portion 4-1 is removable is connected, and this gauge head 4 has gauge head measuring surface X; The clearance distance A of described first predetermined value measuring surface C and the second predetermined value measuring surface B is predetermined value, and this clearance distance A is greater than the aperture D at measured part 8 two ends
with the diameter difference 5 ~ 10mm of the diameter D of hub orbit hole; Described elastic component 6 is installed on bottom described axial hole M and between measurement column E; Also comprise the limiting mechanism of a described measurement column E of restriction sliding scale in the axial hole M of sleeve pipe 3; Thus after compression elastic piece 6 of exerting oneself, this gauge can put into measured part 8 hub orbit hole smoothly, after not exerting oneself, gauge can rely on the acting force of elastic component 6 push sleeve pipe 3 open, drives the gauge head measuring surface X of gauge head 4 fully to contact with the hub orbit hole of part 8; The clearance distance A of the first predetermined value measuring surface B and the second predetermined value measuring surface C is predetermined value simultaneously, and this clearance distance A is greater than the aperture D at measured part 8 two ends
with the diameter difference 5 ~ 10mm of the diameter D of hub orbit hole, after can guaranteeing compression elastic piece 6, described gauge can put into large scale steel wire bearing track hole smoothly.
Described limiting mechanism comprises the locating part 7 being located at described sleeve pipe 3, is located at the stopper slot F of relevant position on measurement column E; Described locating part 7 extends internally in the stopper slot F of measurement column E, the length of this stopper slot F and the aperture D at measured part 8 two ends
with the diameter difference of the diameter D of hub orbit hole to adaptation.This just makes whole gauge move, with easy to use in the scope of restriction.
Described locating part 7 is pin or screw, and described sleeve pipe 3 relevant position is provided with pin-and-hole or the screw of fixing pin or screw; Described stopper slot F is strong groove or two ends is the bar-shaped trough of circular arc.This just makes the optionally processing and manufacturing of limiting mechanism, and thus convenient processing and manufacture is easy.
Described gauge head measuring surface X has axial width H, and described main body measuring surface Y has axial width H
; Axial width H and axial width H
scope is 0.5 ~ 1.5mm, and symmetrical with the common axis of this gauge.The contact area of gauge head measuring surface X and main body measuring surface Y and hub orbit hole can be reduced like this, make the width of gauge head measuring surface X and main body measuring surface Y not affect the measurement of the diameter D of hub orbit hole.
Described axial width H and axial width H
be 1mm.Like this better effects if.
There is connecting hole 3-1 one end of described sleeve pipe 3, and gauge head 4 respective end is provided with connecting portion 4-1, and sleeve pipe 3 and gauge head 4 is by connecting hole 3-1 and connecting portion 4-1 is removable is connected.Thus sleeve pipe 3 adjusts with the replacing of gauge head 4 flexibly and easily.
Described connecting hole 3-1 and connecting portion 4-1 is respectively screw and corresponding bolt or is respectively pin-and-hole and corresponding pin 5.This just makes the processing and manufacturing of connecting hole 3-1 and connecting portion 4-1 to select as required, seems more convenient.
Described elastic component 6 is spring or elastic rubber, does not do concrete restriction, as long as have any elastic component of elastic reaction, key to have sufficient elasticity, arrives in required effect.
Shown in Figure 4, gauge of the present invention also have with the use of plug 2, these feeler gauge 2 two ends are respectively qualified measuring junction T and defective measuring junction Z; During use, qualified measuring junction T and defective measuring junction Z is placed between the first predetermined value measuring surface B and the second predetermined value measuring surface C respectively, the longitudinal size A of qualified measuring junction T
with the longitudinal size A of defective measuring junction Z
suitable with the tolerance of large scale steel wire bearing track bore dia D.Thus the diameter tolerance in large scale steel wire bearing track hole is converted to the dimensional tolerence of the first predetermined value measuring surface B of setting and the distance A of the second predetermined value measuring surface C, so just the diameter D in large scale steel wire bearing track hole is converted to measurement clearance distance A, clearance distance A directly just can measure with feeler gauge 2, and utilize qualified measuring junction T and defective measuring junction Z by or not by judging that whether accessory size qualified.
Shown in Figure 5, the measuring method of the gauge of large scale steel wire bearing track bore dia of the present invention, is characterized in that: comprise the steps:
1) distance D is debugged
; Both hands hold sleeve pipe 3 and main body 1 respectively, and inside compression elastic piece 6, makes the distance D between main body measuring surface Y and measuring surface X
be less than the internal diameter D of measured part 8
;
2) first allocation; Gauge is put into the position of tested product parts 8 internal diameter D;
3) keep in touch; The sleeve pipe 3 held and main body 1, make main body 1 outwards move under the effect of elastic component 6, drives gauge head measuring surface X to contact with the large scale steel wire bearing track hole surface of part 8 with main body measuring surface Y;
4) qualified judgement; Make gauge can be positioned at the diameter D position in large scale steel wire bearing track hole with hand mobile gauge among a small circle, when lathe is measured, coordinate the gauge block measurement of GB/T6093-2001, according to size and described the distance D of gauge A between guarantee main body measuring surface Y and measuring surface X of gauge block
physical size time equal with the minimum dimension D of tested product parts 8 internal diameter, calculates the physical size in part 8 large scale steel wire bearing track hole, judges that whether tested product parts 8 internal diameter D is qualified;
5) feeler gauge is selected; If the actual diameter calculated is less than the setting of part 8, just according to the direct feed of actual measured value, can guarantee that product parts 8 energy 100% is qualified.If do not need the physical size of tested large scale steel wire bearing track hole internal diameter D, just directly can measure the clearance distance A of described gauge with feeler gauge 2, if the longitudinal size A of the qualified measuring junction T of feeler gauge 2
face can be filled between the first predetermined value measuring surface C and the second predetermined value measuring surface B, and the longitudinal size A of defective measuring junction Z
face can not be filled in and then judge part 8 size qualification.
Claims (8)
1. one kind for measuring the gauge of large scale steel wire bearing track bore dia, comprise main body (1), sleeve pipe (3), gauge head (4) and the elastic component (6) that described main body (1) is moved, is characterized in that: described main body (1) is made up of the connecting portion (1-1) of the measurement column (E) and right side measuring big column (G) and be connected to this measurement big column (G) left side; The left side of this measurement big column (G) is the first predetermined value measuring surface (C), and this connecting portion (1-1) outer end is main body measuring surface (Y);
Described sleeve pipe (3) is provided with the axial hole (M) of one end open, and this axial hole (M) is slidably connected the measurement column (E) of main body (1); Axial hole (M) openend of sleeve pipe (3) is the second predetermined value measuring surface (B);
Described sleeve pipe (3) other end is connected with gauge head (4) is removable, and this gauge head (4) has gauge head measuring surface (X), and this gauge head measuring surface (X) has axial width (H), and described main body measuring surface (Y) has axial width (H
); Gauge head axial width (H) and main body axial width (H
) scope is 0.5 ~ 1.5mm, and symmetrical with the common axis after assembling;
Described first predetermined value measuring surface (C) is predetermined value with the clearance distance (A) of the second predetermined value measuring surface (B), and this clearance distance (A) is greater than the aperture (D at measured part (8) two ends
) with the diameter difference 5 ~ 10mm of the diameter (D) of hub orbit hole;
Described elastic component (6) is installed between described axial hole (M) bottom and measurement column (E);
Also comprise the limiting mechanism of the described measurement column of a restriction (E) sliding scale in the axial hole (M) of sleeve pipe (3), this limiting mechanism comprises the locating part (7) being located at described sleeve pipe (3), is located at the stopper slot (F) of the upper relevant position of measurement column (E); Described locating part (7) extends internally in the stopper slot (F) of measurement column (E), the length of this stopper slot (F) and the aperture (D at measured part (8) two ends
) and the diameter difference of diameter (D) of hub orbit hole adapt.
2. the gauge for measuring large scale steel wire bearing track bore dia according to claim 1, is characterized in that: described locating part (7) is pin or screw, and described sleeve pipe (3) relevant position is provided with pin-and-hole or the screw of fixing pin or screw; Described stopper slot (F) for keyway or two ends be the bar-shaped trough of circular arc.
3. the gauge for measuring large scale steel wire bearing track bore dia according to claim 1, is characterized in that: described gauge head axial width (H) and main body axial width (H
) be 1mm.
4. the gauge for measuring large scale steel wire bearing track bore dia according to claim 1, it is characterized in that: there is connecting hole (3-1) one end of described sleeve pipe (3), gauge head (4) respective end is provided with connecting portion (4-1), and sleeve pipe (3) and gauge head (4) are by connecting hole (3-1) and connecting portion (4-1) is removable is connected.
5. the gauge for measuring large scale steel wire bearing track bore dia according to claim 4, is characterized in that: described connecting hole (3-1) and connecting portion (4-1) are respectively screw and corresponding bolt or are respectively pin-and-hole and corresponding pin (5).
6. the gauge for measuring large scale steel wire bearing track bore dia according to claim 1, is characterized in that: described elastic component (6) is spring or elastic rubber.
7. the gauge for measuring large scale steel wire bearing track bore dia according to any one of claim 1 to 6, it is characterized in that: also have with the use of feeler gauge (2), this feeler gauge (2) two ends are respectively qualified measuring junction (T) and defective measuring junction (Z); During use, qualified measuring junction (T) and defective measuring junction (Z) are placed between the first predetermined value measuring surface (C) and the second predetermined value measuring surface (B) respectively, the longitudinal size (A of qualified measuring junction (T)
) and the longitudinal size (A of defective measuring junction (Z)
) suitable with the tolerance of large scale steel wire bearing track bore dia (D).
8. a measuring method for gauge according to claim 1, is characterized in that, hub orbit hole diameter is greater than 500mm, and its measuring method comprises the steps:
1) distance D is debugged
; Both hands hold sleeve pipe (3) and main body (1) respectively, and inside compression elastic piece (6) makes the distance D between main body measuring surface (Y) and gauge head measuring surface (X)
be less than the internal diameter (D of measured part (8)
);
2) first allocation; Gauge is put into the position of tested product parts (8) internal diameter (D);
3) keep in touch; The sleeve pipe (3) held and main body (1), make main body (1) outwards move under the effect of elastic component (6), drives gauge head measuring surface (X) to contact with the large scale steel wire bearing track hole surface of part (8) with main body measuring surface (Y);
4) qualified judgement; Make gauge can be positioned at diameter (D) position in large scale steel wire bearing track hole with hand mobile gauge among a small circle, when lathe is measured, coordinate the gauge block measurement of GB/T6093-2001, according to size and the distance D of this gauge between guarantee main body measuring surface (Y) and gauge head measuring surface (X) of gauge block
physical size time equal with the minimum dimension D of tested product parts (8) internal diameter, calculates the physical size in part (8) large scale steel wire bearing track hole, judges that whether tested product parts (8) internal diameter (D) is qualified;
5) feeler gauge is selected; If the actual diameter calculated is less than the setting of part (8), according to the direct feed of actual measured value, guarantee that product parts (8) energy 100% is qualified; If do not need the physical size of tested large scale steel wire bearing track hole internal diameter (D), feeler gauge (2) is directly used to measure the clearance distance (A) of this gauge, if the longitudinal size (A of the qualified measuring junction (T) of feeler gauge (2)
) face can be filled between the first predetermined value measuring surface (C) and the second predetermined value measuring surface (B), and the longitudinal size (A of defective measuring junction (Z)
) face can not fill in, and judges part (8) size qualification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310266391.7A CN103322962B (en) | 2013-06-28 | 2013-06-28 | For measuring gauge and the method for large scale steel wire bearing track diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310266391.7A CN103322962B (en) | 2013-06-28 | 2013-06-28 | For measuring gauge and the method for large scale steel wire bearing track diameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103322962A CN103322962A (en) | 2013-09-25 |
| CN103322962B true CN103322962B (en) | 2015-12-23 |
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|---|---|---|---|
| CN201310266391.7A Expired - Fee Related CN103322962B (en) | 2013-06-28 | 2013-06-28 | For measuring gauge and the method for large scale steel wire bearing track diameter |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180782B (en) * | 2014-08-13 | 2019-01-15 | 扬州工业职业技术学院 | Adaptive On-line rapid measurement instrument |
| CN105423838A (en) * | 2015-12-16 | 2016-03-23 | 芜湖市甬微制冷配件制造有限公司 | M1C main bearing groove width plug gauge |
| CN106524872A (en) * | 2016-08-30 | 2017-03-22 | 重庆红宇精密工业有限责任公司 | Detection tool of invisible narrow groove |
| CN111174636B (en) * | 2020-01-18 | 2022-02-15 | 贵州理工学院 | Assembly detection device of automatic weapon shell-pulling mechanism and use method thereof |
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|---|---|---|---|---|
| JP2002257503A (en) * | 2001-03-02 | 2002-09-11 | Kawasaki Steel Corp | Device and method for measuring screw diameter of steel pipe joint |
| CN201497473U (en) * | 2009-08-07 | 2010-06-02 | 常州博朗低温设备有限公司 | Shell roundness measuring device |
| CN202229701U (en) * | 2011-09-22 | 2012-05-23 | 上海沪东造船油嘴油泵有限公司 | Inner bore groove measuring tool |
| CN203518981U (en) * | 2013-06-28 | 2014-04-02 | 重庆望江工业有限公司 | Gauge for measuring diameter of large-sized steel wire bearing rail hole |
-
2013
- 2013-06-28 CN CN201310266391.7A patent/CN103322962B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002257503A (en) * | 2001-03-02 | 2002-09-11 | Kawasaki Steel Corp | Device and method for measuring screw diameter of steel pipe joint |
| CN201497473U (en) * | 2009-08-07 | 2010-06-02 | 常州博朗低温设备有限公司 | Shell roundness measuring device |
| CN202229701U (en) * | 2011-09-22 | 2012-05-23 | 上海沪东造船油嘴油泵有限公司 | Inner bore groove measuring tool |
| CN203518981U (en) * | 2013-06-28 | 2014-04-02 | 重庆望江工业有限公司 | Gauge for measuring diameter of large-sized steel wire bearing rail hole |
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| CN103322962A (en) | 2013-09-25 |
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